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Giant and reversible extrinsic magnetocaloric effects in La0.7Ca0.3MnO3 films due to strain

Giant and reversible extrinsic magnetocaloric effects in La0.7Ca0.3MnO3 films due to strain
Giant and reversible extrinsic magnetocaloric effects in La0.7Ca0.3MnO3 films due to strain
Large thermal changes driven by a magnetic field have been proposed for environmentally friendly energy-efficient refrigeration, but only a few materials that suffer hysteresis show these giant magnetocaloric effects. Here we create giant and reversible extrinsic magnetocaloric effects in epitaxial films of the ferromagnetic manganite La0.7Ca0.3MnO3 using strain-mediated feedback from BaTiO3 substrates near a first-order structural phase transition. Our findings should inspire the discovery of giant magnetocaloric effects in a wide range of magnetic materials, and the parallel development of nanostructured bulk samples for practical applications.
1476-1122
52-58
Moya, X.
2f40dcf7-2ac2-4b63-aeba-6ff76bd4d5d4
Hueso, L.E.
30430797-49f9-46ab-8f3c-cadd66340130
Maccherozzi, F.
2335c159-f578-4b33-8ffb-0aa50baea7b2
Tovstolytkin, A.I.
99c65c4b-3b5a-4931-b0b4-e972610c8bba
Podyalovskii, D.I.
fc5fca4e-1d33-4359-bdaa-56323e78fd8e
Ducati, C.
77a45409-045c-4d34-833b-05316bb4fac9
Phillips, L.C.
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Ghidini, M.
408f1828-ebca-4527-b90d-93eb717642f2
Hovorka, O.
a12bd550-ad45-4963-aa26-dd81dd1609ee
Berger, A.
4c40c340-bd0b-4ec6-af1e-fd8326110cca
Vickers, M.E.
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Defay, E.
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Dhesi, S.S.
119a2a82-03d0-4cea-b483-bf3c5c84e870
Mathur, N.D.
b7e81a67-e044-4d0c-a0dc-242b05557510
Moya, X.
2f40dcf7-2ac2-4b63-aeba-6ff76bd4d5d4
Hueso, L.E.
30430797-49f9-46ab-8f3c-cadd66340130
Maccherozzi, F.
2335c159-f578-4b33-8ffb-0aa50baea7b2
Tovstolytkin, A.I.
99c65c4b-3b5a-4931-b0b4-e972610c8bba
Podyalovskii, D.I.
fc5fca4e-1d33-4359-bdaa-56323e78fd8e
Ducati, C.
77a45409-045c-4d34-833b-05316bb4fac9
Phillips, L.C.
76fb5f88-d821-43d0-8edf-beb621a90cea
Ghidini, M.
408f1828-ebca-4527-b90d-93eb717642f2
Hovorka, O.
a12bd550-ad45-4963-aa26-dd81dd1609ee
Berger, A.
4c40c340-bd0b-4ec6-af1e-fd8326110cca
Vickers, M.E.
a90658f4-f813-474c-b670-8d96c4ae8272
Defay, E.
4cf4f12c-9303-4fed-8d15-7cc27b7f4ecd
Dhesi, S.S.
119a2a82-03d0-4cea-b483-bf3c5c84e870
Mathur, N.D.
b7e81a67-e044-4d0c-a0dc-242b05557510

Moya, X., Hueso, L.E., Maccherozzi, F., Tovstolytkin, A.I., Podyalovskii, D.I., Ducati, C., Phillips, L.C., Ghidini, M., Hovorka, O., Berger, A., Vickers, M.E., Defay, E., Dhesi, S.S. and Mathur, N.D. (2012) Giant and reversible extrinsic magnetocaloric effects in La0.7Ca0.3MnO3 films due to strain. Nature Materials, 12 (1), 52-58. (doi:10.1038/nmat3463).

Record type: Article

Abstract

Large thermal changes driven by a magnetic field have been proposed for environmentally friendly energy-efficient refrigeration, but only a few materials that suffer hysteresis show these giant magnetocaloric effects. Here we create giant and reversible extrinsic magnetocaloric effects in epitaxial films of the ferromagnetic manganite La0.7Ca0.3MnO3 using strain-mediated feedback from BaTiO3 substrates near a first-order structural phase transition. Our findings should inspire the discovery of giant magnetocaloric effects in a wide range of magnetic materials, and the parallel development of nanostructured bulk samples for practical applications.

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More information

Published date: 28 October 2012
Organisations: Computational Engineering & Design Group

Identifiers

Local EPrints ID: 351917
URI: http://eprints.soton.ac.uk/id/eprint/351917
ISSN: 1476-1122
PURE UUID: 07ce8bb7-9f5d-4810-b4ee-cbacdb95086e
ORCID for O. Hovorka: ORCID iD orcid.org/0000-0002-6707-4325

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Date deposited: 30 Apr 2013 13:41
Last modified: 15 Mar 2024 03:47

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Contributors

Author: X. Moya
Author: L.E. Hueso
Author: F. Maccherozzi
Author: A.I. Tovstolytkin
Author: D.I. Podyalovskii
Author: C. Ducati
Author: L.C. Phillips
Author: M. Ghidini
Author: O. Hovorka ORCID iD
Author: A. Berger
Author: M.E. Vickers
Author: E. Defay
Author: S.S. Dhesi
Author: N.D. Mathur

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